persistent

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persistent

1. (of plant parts) remaining attached to the plant after the normal time of withering
2. Zoology
a. (of parts normally present only in young stages) present in the adult
b. continuing to grow or develop after the normal period of growth
3. (of a chemical, esp when used as an insecticide) slow to break down; not easily degradable

persistent

[pər′sis·tənt]
(botany)
Of a leaf, withering but remaining attached to the plant during the winter.

persistent

persistent

Permanent. See persistent data, persistent name and persistent object.
References in periodicals archive ?
D 01 Transposition of great vessels 01 Persistent truncus arteriosus 01 with tricuspid atresia, elongated hypertrophied abnormally positioned Rt.
Schnarr, "Pathogenesis of persistent truncus arteriosus in light of observations made in a dog embryo with the anomaly," The American Journal of Cardiology, vol.
It is the result of incomplete separation of the aortopulmonary trunk, even though the differentiation of the semilunar valves is completed; the presence of the semilunar valves is necessary to differentiate diagnosis from persistent truncus arteriosus (6).

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